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Finding the Fourth Proportional to 45,252.72, 67,905.52 and 18,955.24

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Solution

The fourth proportional to 45,252.72, 67,905.52 and 18,955.24 is: 28,443.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,252.72 : 67,905.52 = 18,955.24 : x
  2. Step 2: Convert to fraction form
    45,252.72/67,905.52 = 18,955.24/x
  3. Step 3: Cross multiply
    45,252.72x = 67,905.52 × 18,955.24
  4. Step 4: Simplify right side
    45,252.72x = 1,287,165,428.92
  5. Step 5: Solve for x
    x = 1,287,165,428.92/45,252.72
  6. Step 6: Final answer
    x = 28,443.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.